Camera optical lens

ABSTRACT

The present disclosure discloses a camera optical lens. The camera optical lens including, in an order from an object side to an image side, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens. The camera optical lens further satisfies specific conditions.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims the priority benefit of Chinese PatentApplications Ser. No. 201711151282.5 and Ser. No. 201711151272.1 filedon Nov. 18, 2017, the entire content of which is incorporated herein byreference.

FIELD OF THE PRESENT DISCLOSURE

The present disclosure relates to optical lens, in particular to acamera optical lens suitable for handheld devices such as smart phonesand digital cameras and imaging devices.

DESCRIPTION OF RELATED ART

With the emergence of smart phones in recent years, the demand forminiature camera lens is increasing day by day, but the photosensitivedevices of general camera lens are no other than Charge Coupled Device(CCD) or Complementary metal-Oxide Semiconductor Sensor (CMOS sensor),and as the progress of the semiconductor manufacturing technology makesthe pixel size of the photosensitive devices shrink, coupled with thecurrent development trend of electronic products being that theirfunctions should be better and their shape should be thin and small,miniature camera lens with good imaging quality therefor has become amainstream in the market. In order to obtain better imaging quality, thelens that is traditionally equipped in mobile phone cameras adopts athree-piece or four-piece lens structure. And, with the development oftechnology and the increase of the diverse demands of users, and underthis circumstances that the pixel area of photosensitive devices isshrinking steadily and the requirement of the system for the imagingquality is improving constantly, the five-piece, six-piece andseven-piece lens structure gradually appear in lens design. There is anurgent need for ultra-thin wide-angle camera lenses which have goodoptical characteristics and the chromatic aberration of which is fullycorrected.

BRIEF DESCRIPTION OF THE DRAWINGS

Many aspects of the exemplary embodiments can be better understood withreference to the following drawings. The components in the drawing arenot necessarily drawn to scale, the emphasis instead being placed uponclearly illustrating the principles of the present disclosure.

FIG. 1 is a schematic diagram of a camera optical lens in accordancewith a first embodiment of the present invention;

FIG. 2 shows the longitudinal aberration of the camera optical lensshown in FIG. 1;

FIG. 3 shows the lateral color of the camera optical lens shown in FIG.1;

FIG. 4 presents a schematic diagram of the field curvature anddistortion of the camera optical lens shown in FIG. 1;

FIG. 5 is a schematic diagram of a camera optical lens in accordancewith a second embodiment of the present invention;

FIG. 6 presents the longitudinal aberration of the camera optical lensshown in FIG. 5;

FIG. 7 presents the lateral color of the camera optical lens shown inFIG. 5;

FIG. 8 presents the field curvature and distortion of the camera opticallens shown in FIG. 5;

FIG. 9 is a schematic diagram of a camera optical lens in accordancewith a third embodiment of the present invention;

FIG. 10 presents the longitudinal aberration of the camera optical lensshown in FIG. 9;

FIG. 11 presents the lateral color of the camera optical lens shown inFIG. 9;

FIG. 12 presents the field curvature and distortion of the cameraoptical lens shown in FIG. 9.

DETAILED DESCRIPTION OF THE EXEMPLARY EMBODIMENTS

The present disclosure will hereinafter be described in detail withreference to several exemplary embodiments. To make the technicalproblems to be solved, technical solutions and beneficial effects of thepresent disclosure more apparent, the present disclosure is described infurther detail is together with the figure and the embodiments. Itshould be understood the specific embodiments described hereby is onlyto explain the disclosure, not intended to limit the disclosure.

Embodiment 1

As referring to FIG. 1, the present invention provides a camera opticallens 10. FIG. 1 shows the camera optical lens 10 of embodiment 1 of thepresent invention, the camera optical lens 10 comprises 7 lenses.Specifically, from the object side to the image side, the camera opticallens 10 comprises in sequence: an aperture S1, a first lens L1, a secondlens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixthlens L6 and a seventh lens L7. Optical element like optical filter GFcan be arranged between the seventh lens L7 and the image surface Si.The first lens L1 is made of plastic material, the second lens L2 ismade of plastic material, the third lens L3 is made of plastic material,the fourth lens L4 is made of glass material, the fifth lens L5 is madeof plastic material, the sixth lens L6 is made of glass material, theseventh lens L7 is made of plastic material;

Here, the focal length of the whole camera optical lens 10 is defined asf, the focal length of the first lens is defined as f1, the curvatureradius of the object side surface of the first lens is defined as R1,the curvature radius of the image side surface of the first lens isdefined as R2, the refractive power of the sixth lens is n6, therefractive power of the fourth lens is n4, the focal length of the sixthlens is f6, the focal length of the seventh lens is f7. The cameraoptical lens 10 satisfies the following conditions: −3≤f1/f≤−1,1.7≤n4≤2.2, 1≤6/f7≤10; 2≤(R1+R2)/(R1−R2)≤10; 1.7≤n6≤2.2.

Condition −3≤f1/f≤−1 fixes the negative refractive power of the firstlens L1. If the upper limit of the set value is exceeded, although itbenefits the ultra-thin development of lenses, but the negativerefractive power of the first lens L1 will be too strong, problem likeaberration is difficult to be corrected, and it is also unfavorable forwide-angle development of lens. On the contrary, if the lower limit ofthe set value is exceeded, the negative refractive power of the firstlens becomes too weak, it is then difficult to develop ultra-thinlenses. Preferably, the following condition shall be satisfied,−3≤f1/f≤−1.08.

Condition 1.7≤n4≤2.2 fixes the refractive power of the fourth lens L4,refractive power within this range benefits the ultra-thin developmentof lenses, and it also benefits the correction of aberration.Preferably, the following condition shall be satisfied, 1.76≤n4≤2.06.

Condition 1≤≤f6/f7≤10 fixes the ratio between the focal length f6 of thesixth lens L6 and the focal length f7 of the seventh lens L7, a ratiowithin this range can effectively reduce the sensitivity of lens groupused in camera and further enhance the imaging quality. Preferably, thefollowing condition shall be satisfied, 1.01≤f6/f7≤9.75.

Condition 2≤(R1+R2)/(R1−R2)≤10 fixes the shape of the first lens L1,when the value is beyond this range, with the development into thedirection of ultra-thin and wide-angle lenses, problem like aberrationof the off-axis picture angle is difficult to be corrected. Preferably,the condition 2.33≤(R1+R2)/(R1−R2)≤9.58 shall be satisfied.

Condition 1.7≤n6≤2.2 fixes the refractive power of the sixth lens L6,this condition benefits the ultra-thin development of lenses, and italso benefits the correction of aberration. Preferably, the followingcondition shall be satisfied, 1.71≤n6≤2.01.

When the focal length of the camera optical lens 10 of the presentinvention, the focal length of each lens, the refractive power of therelated lens, and the total optical length, the thickness on-axis andthe curvature radius of the camera optical lens satisfy the aboveconditions, the camera optical lens 10 has the advantage of highperformance and satisfies the design requirement of low TTL.

In this embodiment, the object side surface of the first lens L1 is aconvex surface relative to the proximal axis, its image side surface isa concave surface relative to the proximal axis, and it has negativerefractive power; the focal length of the whole camera optical lens isf, the focal length of the first lens L1 is f1, the thickness on-axis ofthe first lens L1 is d1: they satisfy the following condition:0.11≤d1≤0.37, when the condition is meet, it is beneficial forrealization of the ultra-thin lens. Preferably, the condition0.17≤d1≤0.29 shall be satisfied.

In this embodiment, the object side surface of the second lens L2 is aconvex surface relative to the proximal axis, its image side surface isa concave surface relative to the proximal axis, and it has positiverefractive power; the focal length of the whole camera optical lens 10is f, the focal length of the second lens L2 is f2, the curvature radiusof the object side surface of the second lens L2 is R3, the curvatureradius of image side surface of the second lens L2 is R4 and thethickness on-axis of the second lens L2 is d3, they satisfy thefollowing condition: 0.48≤f2/f≤1.62, when the condition is met, thepositive refractive power of the second lens L2 is controlled withinreasonable scope, the spherical aberration caused by the first lens L1which has negative refractive power and the field curvature of thesystem then can be reasonably and effectively balanced; the condition−2.87≤(R3+R4)/(R3−R4)≤−0.79 fixes the shape of the second lens L2, whenvalue is beyond this range, with the development into the direction ofultra-thin and wide-angle lenses, problem like on-axis chromaticaberration is difficult to be corrected; if the condition 0.22≤d3≤0.73is met, it is beneficial for the realization of ultra-thin lenses.Preferably, the following conditions shall be satisfied, 0.77≤f2/f≤1.30;−1.79≤(R3+R4)/(R3−R4)≤−0.99; 0.35≤d3≤0.58.

In this embodiment, the object side surface of the third lens L3 is aconvex surface relative to the proximal axis, and it has positiverefractive power; the focal length of the whole camera optical lens 10is f, the focal length of the third lens L3 is f3, the curvature radiusof the object side surface of the third lens L3 is R5, the curvatureradius of the image side surface of the third lens L3 is R6 and thethickness on-axis of the third lens L3 is d5, they satisfy thecondition: 1.21≤f3/f≤4.39, by meeting this condition, it is helpful forthe system to obtain good ability in balancing the field curvature, sothat the image quality can be effectively improved; by meeting thecondition −4.5≤(R5+R6)/(R5−R6)≤−0.1 the shape of the third lens L3 canbe effectively controlled, it is beneficial for the shaping of the thirdlens L3 and bad shaping and stress generation due to extra largecurvature of surface of the third lens L3 can be avoided; when thecondition 0.17≤d5≤0.79 is met, it is beneficial for the realization ofultra-thin lenses. Preferably, the following conditions shall besatisfied: 1.93≤f3/f≤3.52; −2.81≤(R5+R6)/(R5−R6)≤−0.12; 0.27≤d5≤0.63.

In this embodiment, the focal length of the whole camera optical lens 10is f, the focal length of the fourth lens L4 is f4, the curvature radiusof the object side surface of the fourth lens L4 is R7, the curvatureradius of the image side surface of the fourth lens L4 is R8 and thethickness on-axis of the fourth lens L4 is d7, they satisfy thecondition: −56.75≤f4/f≤6.28, the appropriate distribution of refractivepower makes it possible that the system has better imaging quality andlower sensitivity; the condition −50.63≤(R7+R8)/(R7−R8)≤38.86 fixes theshape of the fourth lens L4, when beyond this range, with thedevelopment into the direction of ultra-thin and wide-angle lens, theproblem like chromatic aberration is difficult to be corrected; when thecondition 0.13≤d7≤0.86 is met, it is beneficial for realization ofultra-thin lenses. Preferably, the following conditions shall besatisfied, −35.47≤f4/f≤5.02; −31.65≤(R7+R8)/(R7−R8)≤31.09; 0.21≤d7≤0.69.

In this embodiment, the object side surface of the fifth lens L5 is aconcave surface relative to the proximal axis, its image side surface isa convex surface relative to the proximal axis, and it has positiverefractive power; the focal length of the whole camera optical lens 10is f, the focal length of the fifth lens L5 is f5, the curvature radiusof the object side surface of the fifth lens L5 is R9, the curvatureradius of the image side surface of the fifth lens L5 is R10 and thethickness on-axis of the fifth lens L5 is d9, they satisfy thecondition: 0.26≤f5/f≤1.25, the limitation on the fifth lens L5 caneffectively make the light angle of the camera lens flat and thetolerance sensitivity reduces; the condition 0.77≤(R9+R10)/(R9−R10)≤3.01fixes the shape of the fifth lens L5, when beyond this range, with thedevelopment into the direction of ultra-thin and wide-angle lens, theproblem like off-axis chromatic aberration is difficult to be corrected;when the condition 0.25≤d9≤0.89 is met, it is beneficial for therealization of ultra-thin lens. Preferably, the following conditionsshall be satisfied: 0.42≤f5/f≤1.00; 1.23≤(R9+R10)/(R9−R10)≤2.41;0.39≤d9≤0.71.

In this embodiment, the object side surface of the sixth lens L6 is aconvex surface relative to the proximal axis, its image side surface isa concave surface relative to the proximal axis, and it has negativerefractive power; the focal length of the whole camera optical lens 10is f, the focal length of the sixth lens L6 is f6, the curvature radiusof the object side surface of the sixth lens L6 is R11, the curvatureradius of the image side surface of the sixth lens L6 is R12 and thethickness on-axis of the sixth lens L6 is d11, they satisfy thecondition: −14.79≤f6/f≤−0.63, the appropriate distribution of refractivepower makes it possible that the system has better imaging quality andlower sensitivity; the condition 0.74≤(R11+R12)/(R11−R12)≤8.87 fixes theshape of the sixth lens L6, when beyond this range, with the developmentinto the direction of ultra-thin and wide-angle lenses, the problem likeoff-axis chromatic aberration is difficult to be corrected; when thecondition 0.17≤d11≤1.01 is met, it is beneficial for the realization ofultra-thin lens. Preferably, the following conditions shall besatisfied, −9.25≤f6/f≤−0.79; 1.18≤(R11+R12)/(R11−R12)≤7.09;0.27≤d11≤0.81.

In this embodiment, the object side surface of the seventh lens L7 is aconvex surface relative to the proximal axis, its image side surface isa concave surface relative to the proximal axis, and it has negativerefractive power; the focal length of the whole camera optical lens 10is f, the curvature radius of the object side surface of the seventhlens L7 is R13, the curvature radius of the image side surface of theseventh lens L7 is R14, the focal length of the seventh lens L7 is f7,and the thickness on-axis of the seventh lens L7 is d13, they satisfythe condition: −1.89≤f7/f≤−0.52 is met, the appropriate distribution ofrefractive power makes it possible that the system has better imagingquality and lower sensitivity; the condition:1.03≤(R13+R14)/(R13−R14)≤5.41, which fixes the shape of the seventh lensL7, when beyond this range, with the development into the direction ofultra-thin and wide-angle lenses, the problem like off-axis chromaticaberration is difficult to be corrected; when the condition0.13≤d13≤0.45 is met, it is beneficial for the realization of ultra-thinlens. Preferably, the following conditions shall be satisfied,−1.18≤f7/f≤−0.65; 1.64≤(R13+R14)/(R13−R14)≤4.33; 0.21≤d13≤0.36.

In this embodiment, the total optical length TTL of the camera opticallens 10 is less than or equal to 6.18 mm, it is beneficial for therealization of ultra-thin lenses. Preferably, the total optical lengthTTL of the camera optical lens 10 is less than or equal to 5.9 mm.

In this embodiment, the aperture F number of the camera optical lens 10is less than or equal to 2.25. A large aperture has better imagingperformance. Preferably, the aperture F number of the camera opticallens 10 is less than or equal to 2.2.

With such design, the total optical length TTL of the whole cameraoptical lens 10 can be made as short as possible, thus theminiaturization characteristics can be maintained.

In the following, an example will be used to describe the camera opticallens 10 of the present invention. The symbols recorded in each exampleare as follows. The unit of distance, radius and center thickness is mm.

TTL: Optical length (the distance on-axis from the object side surfaceto the image surface of the first lens L1).

Preferably, inflexion points and/or arrest points can also be arrangedon the object side surface and/or image side surface of the lens, sothat the demand for high quality imaging can be satisfied, thedescription below can be referred for specific implementable scheme.

The design information of the camera optical lens 10 in the firstembodiment of the present invention is shown in the following, the unitof the focal length, distance, radius and center thickness is mm.

The design information of the camera optical lens 10 in the firstembodiment of the present invention is shown in the tables 1 and 2.

TABLE 1 R d nd νd S1 ∞ d0 =  −0.120 R1 1.924 d1 =   0.245 nd1 1.6509 ν121.52 R2 1.350 d2 =   0.097 R3 2.078 d3 =   0.439 nd2 1.5352 ν2 56.09 R424.369 d4 =   0.060 R5 5.107 d5 =   0.454 nd3 1.5352 ν3 56.09 R6 30.273d6 =   0.528 R7 5.751 d7 =   0.267 nd4 1.9229 ν4 20.88 R8 5.324 d8 =  0.694 R9 −4.268 d9 =   0.591 nd5 1.5352 ν5 56.09 R10 −0.908 d10 = 0.030 R11 10.888 d11 =  0.444 nd6 1.7130 ν6 53.94 R12 2.089 d12 = 0.030 R13 1.580 d13 =  0.260 nd7 1.6509 ν7 21.52 R14 0.891 d14 =  0.605R15 ∞ d15 =  0.210 ndg 1.5168 νg 64.17 R16 ∞ d16 =  0.500

In which, the meaning of the various symbols is as follows.

S1: Aperture;

R: The curvature radius of the optical surface, the central curvatureradius in case of lens;

R1: The curvature radius of the object side surface of the first lensL1;

R2: The curvature radius of the image side surface of the first lens L1;

R3: The curvature radius of the object side surface of the second lensL2;

R4: The curvature radius of the image side surface of the second lensL2;

R5: The curvature radius of the object side surface of the third lensL3;

R6: The curvature radius of the image side surface of the third lens L3;

R7: The curvature radius of the object side surface of the fourth lensL4;

R8: The curvature radius of the image side surface of the fourth lensL4;

R9: The curvature radius of the object side surface of the fifth lensL5;

R10: The curvature radius of the image side surface of the fifth lensL5;

R11: The curvature radius of the object side surface of the sixth lensL6;

R12: The curvature radius of the image side surface of the sixth lensL6;

R13: The curvature radius of the object side surface of the seventh lensL7;

R14: The curvature radius of the image side surface of the seventh lensL7;

R15: The curvature radius of the object side surface of the opticalfilter GF;

R16: The curvature radius of the image side surface of the opticalfilter GF;

d: The thickness on-axis of the lens and the distance on-axis betweenthe lens;

d0: The distance on-axis from aperture S1 to the object side surface ofthe first lens L1;

d1: The thickness on-axis of the first lens L1;

d2: The distance on-axis from the image side surface of the first lensL1 to the object side surface of the second lens L2;

d3: The thickness on-axis of the second lens L2;

d4: The distance on-axis from the image side surface of the second lensL2 to the object side surface of the third lens L3;

d5: The thickness on-axis of the third lens L3;

d6: The distance on-axis from the image side surface of the third lensL3 to the object side surface of the fourth lens L4;

d7: The thickness on-axis of the fourth lens L4;

d8: The distance on-axis from the image side surface of the fourth lensL4 to the object side surface of the fifth lens L5;

d9: The thickness on-axis of the fifth lens L5;

d10: The distance on-axis from the image side surface of the fifth lensL5 to the object side surface of the sixth lens L6;

d11: The thickness on-axis of the sixth lens L6;

d12: The distance on-axis from the image side surface of the sixth lensL6 to the object side surface of the seventh lens L7;

d13: The thickness on-axis of the seventh lens L7;

d14: The distance on-axis from the image side surface of the seventhlens L7 to the object side surface of the optical filter GF;

d15: The thickness on-axis of the optical filter GF;

d16: The distance on-axis from the image side surface to the imagesurface of the optical filter GF;

nd: The refractive power of the d line;

nd1: The refractive power of the d line of the first lens L1;

nd2: The refractive power of the d line of the second lens L2;

nd3: The refractive power of the d line of the third lens L3;

nd4: The refractive power of the d line of the fourth lens L4;

nd5: The refractive power of the d line of the fifth lens L5;

nd6: The refractive power of the d line of the sixth lens L6;

nd7: The refractive power of the d line of the seventh lens L7;

ndg: The refractive power of the d line of the optical filter GF;

vd: The abbe number;

v1: The abbe number of the first lens L1;

v2: The abbe number of the second lens L2;

v3: The abbe number of the third lens L3;

v4: The abbe number of the fourth lens L4;

v5: The abbe number of the fifth lens L5;

v6: The abbe number of the sixth lens L6;

v7: The abbe number of the seventh lens L7;

vg: The abbe number of the optical filter GF;

Table 2 shows the aspherical surface data of the camera optical lens 10in the embodiment 1 of the present invention.

TABLE 2 Conic Index Aspherical Surface Index k A4 A6 A8 A10 A12 A14 A16R1 −4.5200E+00 −4.8591E−02  2.6673E−02 −5.5140E−03 −4.0113E−02 4.0459E−02 −8.0229E−03 −8.6676E−04 R2 −4.2618E+00 −3.6007E−03−7.3618E−03  9.8756E−04 −8.8819E−03 −1.3901E−02  1.2781E−02  2.6938E−03R3 −2.0985E+00 −4.8327E−02  2.8390E−02  4.6132E−03 −1.9870E−02−3.4143E−03  3.7035E−03 −2.2173E−03 R4  0.0000E+00 −4.4139E−02 3.9066E−02 −7.8536E−03  1.9158E−02 −3.3624E−03 −1.1331E−02 −1.3678E−03R5  0.0000E+00 −2.8846E−02  2.6423E−02  9.1999E−03 −3.6909E−03−1.5107E−03  3.9519E−04 −2.1049E−04 R6  0.0000E+00 −4.9765E−02 8.8204E−03 −1.0481E−02  4.6146E−03  1.9704E−03  3.0164E−04  1.5041E−04R7  0.0000E+00 −1.1280E−01  9.4871E−03 −7.7174E−03  1.1075E−02−1.6321E−03 −1.6413E−04 −3.6092E−05 R8  0.0000E+00 −1.0319E−01 1.5195E−02 −3.0184E−03  2.0838E−03  1.3609E−03 −4.8503E−04 −5.0776E−05R9  6.0735E+00 −7.4164E−03  2.0139E−02 −5.4005E−03  4.9646E−04 7.2514E−05  7.8939E−05 −2.6637E−05 R10 −3.7500E+00 −5.5250E−02 3.5774E−02 −3.1125E−03 −4.1182E−04  2.0027E−06  2.8842E−05 −4.1010E−06R11  0.0000E+00 −2.2212E−02  1.7261E−03 −1.6680E−04 −2.0955E−05−2.0410E−05  1.3657E−05 −1.6564E−06 R12 −1.3891E+01 −5.2213E−03−3.1343E−03  1.9985E−04  1.5338E−05 −7.3361E−06  3.4511E−07  1.2941E−08R13 −7.0211E+00 −2.9514E−02  4.5038E−04  2.9466E−04 −4.4921E−06−1.6767E−06 −3.8105E−07  1.8330E−08 R14 −4.9009E+00 −3.5703E−02 4.7209E−03 −2.7969E−04  7.5402E−06  1.0018E−06 −1.6162E−07 −4.8267E−09

Among them, K is a conic index, A4, A6, A8, A10, A12, A14, A16 areaspheric surface indexes.

IH: Image heighty=(x ² /R)/[1+{1−(k+1)(x ² /R ²)}^(1/2)]+A4x ⁴ +A6x ⁶ +A8x ⁸ +A10x ¹⁰+A12x ¹² +A14x ¹⁴ +A16x ¹⁶  (1)

For convenience, the aspheric surface of each lens surface uses theaspheric surfaces shown in the above condition (1). However, the presentinvention is not limited to the aspherical polynomials form shown in thecondition (1).

Table 3 and table 4 show the inflexion points and the arrest pointdesign data of the camera optical lens 10 lens in embodiment 1 of thepresent invention. In which, R1 and R2 represent respectively the objectside surface and image side surface of the first lens L1, R3 and R4represent respectively the object side surface and image side surface ofthe second lens L2, R5 and R6 represent respectively the object sidesurface and image side surface of the third lens L3, R7 and R8 representrespectively the object side surface and image side surface of thefourth lens L4, R9 and R10 represent respectively the object sidesurface and image side surface of the fifth lens L5, R11 and R12represent respectively the object side surface and image side surface ofthe sixth lens L6, R13 and R14 represent respectively the object sidesurface and image side surface of the seventh lens L7. The data in thecolumn named “inflexion point position” are the vertical distances fromthe inflexion points arranged on each lens surface to the optic axis ofthe camera optical lens 10. The data in the column named “arrest pointposition” are the vertical distances from the arrest points arranged oneach lens surface to the optic axis of the camera optical lens 10.

TABLE 3 inflexion point inflexion point inflexion point inflexion pointnumber position 1 position 2 position 3 R1 1 0.785 R2 2 0.795 0.965 R3 10.845 R4 3 0.315 0.595 0.925 R5 0 R6 2 0.245 1.035 R7 2 0.365 1.185 R8 20.405 1.265 R9 0 R10 1 0.965 R11 1 0.615 R12 1 0.845 R13 1 0.735 R14 10.705

TABLE 4 arrest point arrest point arrest point number position 1position 2 R1 0 R2 0 R3 0 R4 1 1.005 R5 0 R6 2 0.415 1.185 R7 1 0.635 R81 0.715 R9 0 R10 0 R11 1 1.085 R12 1 1.635 R13 1 1.555 R14 1 2.055

FIG. 2 and FIG. 3 show the longitudinal aberration and lateral colorschematic diagrams after light with a wavelength of 470 nm, 555 nm and650 nm passes the camera optical lens 10 in the first embodiment. FIG. 4shows the field curvature and distortion schematic diagrams after lightwith a wavelength of 555 nm passes the camera optical lens 10 in thefirst embodiment, the field curvature S in FIG. 4 is a field curvaturein the sagittal direction, T is a field curvature in the meridiandirection.

Table 13 shows the various values of the examples 1, 2, 3 and the valuescorresponding with the parameters which are already specified in theconditions.

As shown in Table 13, the first embodiment satisfies the variousconditions.

In this embodiment, the pupil entering diameter of the camera opticallens is 1.805 mm, the full vision field image height is 2.994 mm, thevision field angle in the diagonal direction is 74.76°, it haswide-angle and is ultra-thin, its on-axis and off-axis chromaticaberrations are fully corrected, and it has excellent opticalcharacteristics.

Embodiment 2

Embodiment 2 is basically the same as embodiment 1, the meaning of itssymbols is the same as that of embodiment 1, in the following, only thedifferences are described.

Table 5 and table 6 show the design data of the camera optical lens 20in embodiment 2 of the present invention.

TABLE 5 R d nd νd S1 ∞ d0 =  −0.095 R1 1.238 d1 =   0.210 nd1 1.6509 ν121.52 R2 0.994 d2 =   0.175 R3 1.706 d3 =   0.478 nd2 1.5352 ν2 56.09 R49.536 d4 =   0.255 R5 3.567 d5 =   0.526 nd3 1.5352 ν3 56.09 R6 9.276 d6=   0.403 R7 −2.925 d7 =   0.576 nd4 1.8211 ν4 24.06 R8 −5.157 d8 =  0.180 R9 −3.081 d9 =   0.511 nd5 1.5352 ν5 56.09 R10 −1.031 d10 = 0.030 R11 4.135 d11 =  0.342 nd6 1.8208 ν6 42.71 R12 2.938 d12 =  0.050R13 1.503 d13 =  0.280 nd7 1.6509 ν7 21.52 R14 0.850 d14 =  0.778 R15 ∞d15 =  0.210 ndg 1.5168 νg 64.17 R16 ∞ d16 =  0.500

Table 6 shows the aspherical surface data of each lens of the cameraoptical lens 20 in embodiment 2 of the present invention.

TABLE 6 Conic Index Aspherical Surface Index k A4 A6 A8 A10 A12 A14 A16R1 −1.7577E+00 −3.3899E−02 −3.7892E−02 −1.1236E−02 −6.5437E−02 6.1294E−02  1.0623E−02 −3.1633E−02 R2 −1.7934E+00 −4.2430E−03−9.6860E−02  2.5274E−02  5.2170E−03 −8.4979E−02 −5.1343E−02  7.4153E−02R3 −6.7428E−01 −2.4649E−02 −6.8069E−03  1.2469E−01  8.7005E−03−8.0778E−02  3.4522E−02  5.0675E−03 R4  0.0000E+00 −1.1010E−01 8.4869E−02 −2.2287E−02  1.9076E−01 −1.2674E−02 −3.4484E−02  7.4445E−02R5 −3.0451E−01 −1.0251E−01 −4.7662E−02  9.7941E−02 −3.3251E−02 9.7199E−03  1.6034E−03  3.3051E−03 R6  0.0000E+00 −4.5039E−02−7.1619E−02  3.7668E−02 −3.3024E−03 −6.8626E−04  4.6233E−04 −8.6198E−04R7  5.9376E−01 −4.5559E−02 −6.1016E−03  2.3648E−02 −1.0196E−02 6.8482E−03  7.0070E−03 −5.2614E−03 R8  3.3929E−02 −6.8995E−02 4.3371E−02 −1.2909E−02  4.9900E−03  1.5166E−04 −1.9833E−03  1.0435E−03R9 −6.1542E−01  1.6167E−02  2.2293E−02 −3.8598E−03 −2.3725E−03−7.2634E−04  9.8766E−05  1.8442E−04 R10 −4.1388E+00 −3.0080E−02 3.9615E−02 −6.0010E−03 −6.8764E−04 −1.2457E−04  2.7113E−05  1.4352E−05R11  0.0000E+00 −2.9568E−02  6.9272E−04  2.8669E−04  2.0313E−05−7.7170E−06 −6.8539E−09  0.0000E+00 R12 −2.9655E+00 −1.7811E−02−2.4057E−03  5.8178E−04 −8.1570E−05 −8.6498E−07  5.4393E−07  6.3251E−08R13 −4.1497E+00 −4.0445E−02  3.8062E−03 −3.2661E−04  6.3435E−06 3.4846E−06  4.9961E−09  1.1096E−09 R14 −4.2853E+00 −3.5762E−02 3.3653E−03  4.8487E−05 −1.0728E−05 −3.1274E−07 −4.2051E−08 −1.5051E−09

Table 7 and table 8 show the inflexion points and the arrest pointdesign data of the camera optical lens 20 lens in the second embodimentof the present invention.

TABLE 7 inflexion point inflexion point inflexion point inflexion pointnumber position 1 position 2 position 3 R1 1 0.685 R2 1 0.665 R3 0 R4 20.315 0.525 R5 2 0.475 0.785 R6 1 0.375 R7 1 0.975 R8 1 1.045 R9 3 0.8551.105 1.325 R10 1 0.835 R11 1 0.895 R12 1 0.995 R13 2 0.795 2.245 R14 10.725

TABLE 8 arrest point arrest point arrest point number position 1position 2 R1 0 R2 0 R3 0 R4 0 R5 0 R6 1 0.605 R7 0 R8 0 R9 0 R10 0 R111 1.765 R12 1 1.695 R13 1 1.625 R14 1 2.095

FIG. 6 and FIG. 7 show the longitudinal aberration and lateral colorschematic diagrams after light with a wavelength of 470 nm, 555 nm and650 nm passes the camera optical lens 20 in the second embodiment. FIG.8 shows the field curvature and distortion schematic diagrams afterlight with a wavelength of 555 nm passes the camera optical lens 20 inthe second embodiment.

As shown in Table 13, the second embodiment satisfies the variousconditions.

In this embodiment, the pupil entering diameter of the camera opticallens is 1.792 mm, the full vision field image height is 2.994 mm, thevision field angle in the diagonal direction is 74.78°, it haswide-angle and is ultra-thin, its on-axis and off-axis chromaticaberrations are fully corrected, and it has excellent opticalcharacteristics.

Embodiment 3

Embodiment 3 is basically the same as embodiment 1, the meaning of itssymbols is the same as that of embodiment 1, in the following, only thedifferences are described.

The design information of the camera optical lens 30 in the thirdembodiment of the present invention is shown in the tables 9 and 10.

TABLE 9 R d nd νd S1 ∞ d0 =  0.000 R1 3.308 d1 =  0.240 nd1 1.6355 ν123.97 R2 1.503 d2 =  0.040 R3 1.797 d3 =  0.487 nd2 1.5352 ν2 56.09 R414.967 d4 =  0.039 R5 8.753 d5 =  0.335 nd3 1.5352 ν3 56.09 R6 −11.720d6 =  0.226 R7 2.028 d7 =  0.263 nd4 1.9229 ν4 20.88 R8 2.195 d8 = 1.224 R9 −3.875 d9 =  0.491 nd5 1.5352 ν5 56.09 R10 −1.253 d10 = 0.030R11 19.797 d11 = 0.675 nd6 1.7725 ν6 49.46 R12 10.336 d12 = 0.050 R133.657 d13 = 0.300 nd7 1.6613 ν7 20.37 R14 1.259 d14 = 0.510 R15 ∞ d15 =0.210 ndg 1.5168 νg 64.17 R16 ∞ d16 = 0.500

Table 10 shows the aspherical surface data of each lens of the cameraoptical lens 30 in embodiment 3 of the present invention.

TABLE 10 Conic Index Aspherical Surface Index k A4 A6 A8 A10 A12 A14 A16R1 −1.5882E+01 −8.4922E−02 −1.9602E−03  3.3348E−02 −2.4473E−02 1.2045E−03  6.4386E−03 −3.3285E−03 R2 −5.2816E+00 −7.8103E−02−1.9415E−02  3.3585E−02  3.6767E−03 −1.0308E−02 −7.6092E−03 −2.8489E−04R3  1.2546E−01 −1.4349E−01  5.7035E−02 −3.4058E−03 −1.0982E−02 6.2350E−03 −3.8026E−03 −4.3082E−03 R4 −3.6301E+02 −7.5011E−02 4.1870E−02 −6.3682E−03  1.3404E−03 −1.0120E−02 −5.4656E−04  2.0604E−03R5  2.5029E+01 −2.4586E−02  4.7224E−04  2.7511E−03 −5.0890E−03−6.1312E−03 −2.0799E−03  1.9155E−04 R6  0.0000E+00 −3.1396E−02 3.7403E−02 −1.0342E−02 −2.9436E−03 −1.9762E−03 −2.0840E−03 −2.5661E−04R7  2.5918E−01 −1.1794E−01  2.7672E−02 −1.1204E−02  7.4112E−03−2.4765E−03  3.1028E−05 −4.4597E−04 R8  9.8280E−02 −9.1193E−02 3.5558E−03  1.7457E−03  2.2996E−03 −4.2959E−04 −7.4786E−04 −1.1887E−04R9  5.1058E+00  1.3746E−02  1.8543E−02 −5.5013E−03 −4.0582E−04−2.7795E−07  3.9329E−05 −5.7786E−06 R10 −3.7270E+00 −3.1171E−02 3.5025E−02 −4.1806E−03 −6.5298E−04  2.8309E−06 −1.9197E−06  7.5078E−06R11  5.7185E+01 −1.9873E−02  2.6004E−03  2.5926E−04  1.6123E−05−3.3435E−05  3.6031E−06 −5.4091E−08 R12  4.9823E+00 −1.2921E−02−3.1850E−03  1.0110E−04 −2.1637E−05  3.7341E−06 −9.0214E−07  1.3657E−07R13 −7.3736E+00 −3.6163E−02 −1.1829E−03  2.5400E−04  6.2673E−07−2.3355E−06  8.7940E−08  4.9451E−08 R14 −4.4526E+00 −3.9235E−02 5.5825E−03 −3.2739E−04  9.1428E−07  9.6120E−07 −2.8394E−08 −8.7668E−09

Table 11 and table 12 show the inflexion points and the arrest pointdesign data of the camera optical lens 30 lens in embodiment 3 of thepresent invention.

TABLE 11 inflexion point inflexion point inflexion point inflexion pointnumber position 1 position 2 position 3 R1 1 0.465 R2 1 0.585 R3 1 0.895R4 1 0.265 R5 1 0.665 R6 0 R7 1 0.855 R8 1 0.765 R9 0 R10 1 0.895 R11 30.495 1.605 1.715 R12 1 0.715 R13 1 0.675 R14 1 0.785

TABLE 12 arrest point arrest point arrest point number position 1position 2 R1 1 0.865 R2 0 R3 0 R4 1 0.485 R5 1 0.915 R6 0 R7 0 R8 0 R90 R10 0 R11 1 0.905 R12 1 1.155 R13 1 1.185 R14 1 2.045

FIG. 10 and FIG. 11 show the longitudinal aberration and lateral colorschematic diagrams after light with a wavelength of 470 nm, 555 nm and650 nm passes the camera optical lens 30 in the third embodiment. FIG.12 shows the field curvature and distortion schematic diagrams afterlight with a wavelength of 555 nm passes the camera optical lens 30 inthe third embodiment.

The following table 13, in accordance with the above conditions, liststhe values in this embodiment corresponding with each conditionexpression. Apparently, the camera optical system of this embodimentsatisfies the above conditions.

In this embodiment, the pupil entering diameter of the camera opticallens is 1.81 mm, the full vision field image height is 2.994 mm, thevision field angle in the diagonal direction is 74.68°, it haswide-angle and is ultra-thin, its on-axis and off-axis chromaticaberrations are fully corrected, and it has excellent opticalcharacteristics.

TABLE 13 Embodiment 1 Embodiment 2 Embodiment 3 f 3.881 3.906 3.892 f1−8.296 −11.698 −4.536 f2 4.202 3.789 3.755 f3 11.369 10.455 9.386 f4−110.105 −9.254 16.292 f5 2.024 2.655 3.238 f6 −3.691 −14.146 −28.789 f7−3.662 −3.596 −3.030 f6/f7 1.008 3.934 9.500 (R1 + R2)/(R1 − R2) 5.7029.166 2.665 (R3 + R4)/(R3 − R4) −1.186 −1.436 −1.273 (R5 + R6)/(R5 − R6)−1.406 −2.249 −0.145 (R7 + R8)/(R7 − R8) 25.909 −3.622 −25.316 (R9 +R10)/(R9 − R10) 1.541 2.006 1.956 (R11 + R12)/(R11 − R12) 1.475 5.9113.185 (R13 + R14)/(R13 − R14) 3.588 3.607 2.051 f1/f −2.138 −2.995−1.165 f2/f 1.083 0.970 0.965 f3/f 2.930 2.677 2.411 f4/f −28.374 −2.3694.186 f5/f 0.522 0.680 0.832 f6/f −0.951 −3.622 −7.397 f7/f −0.944−0.921 −0.779 d1 0.245 0.210 0.240 d3 0.439 0.478 0.487 d5 0.454 0.5260.335 d7 0.267 0.576 0.263 d9 0.591 0.511 0.491 d11 0.444 0.342 0.675d13 0.260 0.280 0.300 Fno 2.150 2.180 2.150 TTL 5.454 5.505 5.620 d7/TTL0.049 0.105 0.047 n1 1.6509 1.6509 1.6355 n2 1.5352 1.5352 1.5352 n31.5352 1.5352 1.5352 n4 1.9229 1.8211 1.9229 n5 1.5352 1.5352 1.5352 n61.7130 1.8208 1.7725 n7 1.6509 1.6509 1.6613

It is to be understood, however, that even though numerouscharacteristics and advantages of the present exemplary embodiments havebeen set forth in the foregoing description, together with details ofthe structures and functions of the embodiments, the disclosure isillustrative only, and changes may be made in detail, especially inmatters of shape, size, and arrangement of parts within the principlesof the invention to the full extent indicated by the broad generalmeaning of the terms where the appended claims are expressed.

What is claimed is:
 1. A camera optical lens comprising, from an objectside to an image side in sequence: a first lens, a second lens, a thirdlens, a fourth lens, a fifth lens, a sixth lens and a seventh lens;wherein the camera optical lens further satisfies the followingconditions:−3≤f1/f≤−1;1.7≤n4≤2.2;1≤f6/f7≤10;2≤(R1+R2)/(R1-R2)≤10;1.7≤n6≤2.2; where f: the focal length of the camera optical lens; f1:the focal length of the first lens; f6: the focal length of the sixthlens; f7: the focal length of the seventh lens; n4: the refractive powerof the fourth lens; n6: the refractive power of the sixth lens; R1: thecurvature radius of the object side surface of the first lens; R2: thecurvature radius of the image side surface of the first lens.
 2. Thecamera optical lens as described in claim 1, wherein the first lens ismade of plastic material, the second lens is made of plastic material,the third lens is made of plastic material, the fourth lens is made ofglass material, the fifth lens is made of plastic material, the sixthlens is made of glass material, the seventh lens is made of plasticmaterial.
 3. The camera optical lens as described in claim 1, whereinthe first lens has a negative refractive power with a convex object sidesurface and a concave image side surface; the camera optical lensfurther satisfies the following conditions:0.11≤d1≤0.37; where d1: the thickness on-axis of the first lens.
 4. Thecamera optical lens as described in claim 1, wherein the second lens hasa positive refractive power with a convex object side surface and aconcave image side surface; the camera optical lens further satisfiesthe following conditions:0.48≤f2/f≤1.62;−2.87≤(R3+R4)/(R3-R4)≤−0.79;0.22≤d3≤0.73; where f: the focal length of the camera optical lens; f2:the focal length of the second lens; R3: the curvature radius of theobject side surface of the second lens; R4: the curvature radius of theimage side surface of the second lens; d3: the thickness on-axis of thesecond lens.
 5. The camera optical lens as described in claim 1, whereinthe third lens has a positive refractive power with a convex object sidesurface; wherein the camera optical lens further satisfies the followingconditions:1.21≤f3/f≤4.39;−4.5≤(R5+R6)/(R5-R6)≤−0.1;0.17≤d5≤0.79; where f: the focal length of the camera optical lens; f3:the focal length of the third lens; R5: the curvature radius of theobject side surface of the third lens; R6: the curvature radius of theimage side surface of the third lens; d5: the thickness on-axis of thethird lens.
 6. The camera optical lens as described in claim 1, whereinthe camera optical lens further satisfies the following conditions:−56.75≤f4/f≤6.28;−50.63≤(R7+R8)/(R7-R8)≤38.86;0.13≤d7≤0.86; where f: the focal length of the camera optical lens; f4:the focal length of the fourth lens; R7: the curvature radius of theobject side surface of the fourth lens; R8: the curvature radius of theimage side surface of the fourth lens; d7: the thickness on-axis of thefourth lens.
 7. The camera optical lens as described in claim 1, whereinthe fifth lens has a positive refractive power with a concave objectside surface and a convex image side surface; the camera optical lensfurther satisfies the following conditions:0.26≤f5/f≤1.25;0.77≤(R9+R10)/(R9-R10)≤3.01;0.25≤d9≤0.89; where f: the focal length of the camera optical lens; f5:the focal length of the fifth lens; R9: the curvature radius of theobject side surface of the fifth lens; R10: the curvature radius of theimage side surface of the fifth lens; d9: the thickness on-axis of thefifth lens.
 8. The camera optical lens as described in claim 1, whereinthe sixth lens has a negative refractive power with a convex object sidesurface and a concave image side surface; the camera optical lensfurther satisfies the following conditions:−14.79≤f6/f≤−0.63;0.74≤(R11+R12)/(R11-R12)≤8.87;0.17≤d11≤1.01; where f: the focal length of the camera optical lens; f6:the focal length of the sixth lens; R11: the curvature radius of theobject side surface of the sixth lens; R12: the curvature radius of theimage side surface of the sixth lens; d11: the thickness on-axis of thesixth lens.
 9. The camera optical lens as described in claim 1, whereinthe seventh lens has a negative refractive power with a convex objectside surface and a concave image side surface; the camera optical lensfurther satisfies the following conditions:1.03≤(R13+R14)/(R13-R14)≤5.41;−1.89≤f7/f≤−0.520.13≤d13≤0.45; where f: the focal length of the camera optical lens; f7:the focal length of the seventh lens; d13: the thickness on-axis of theseventh lens; R13: the curvature radius of the object side surface ofthe seventh lens; R14: the curvature radius of the image side surface ofthe seventh lens.
 10. The camera optical lens as described in claim 1,wherein the total optical length TTL of the camera optical lens is lessthan or equal to 6.18 mm.
 11. The camera optical lens as described inclaim 1, wherein the aperture F number of the camera optical lens isless than or equal to 2.25.